Posts in January, 2017

Jan 19 Horizontal Gaze Nystagmus (HGN)

As was previously discussed, Horizontal Gaze Nystagmus (HGN) is the involuntary jerking of the eyes as they look to the side. ...

Jan 10 The Field Sobriety (SFST) Validation Studies

There have been numerous studies conducted by the Southern California Research Institute (SCRI) to “validate the Standardized ...

Jan 04 Standardized Field Sobriety Tests (SFST's) in a DUI Investigation

What are the Standardized Field Sobriety Tests (SFST’s) used in a DUI Arrest? These are roadside tests used by law enforcement ...